Machine for applying pressure to shoe bottoms



l mo 33, 5939. L G. KNOWLES MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS 2 Sheets-Sheet Filed Feb. 12, 1937 939. L. a. KNOWLES MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Filed Feb. 1 1937 2 Sheets-Sheet 2 Patented Jan. 31, 1939 UNITED srr PATENT @FFECE MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Application February 12, 1937, Serial No. 125,459

6 Claims.

This invention relates to machines for applying pressure to shoe bottoms and is illustrated herein as embodied in apparatus for use in cement attaching soles to shoes.

An object of the invention is to provide for use in cement attaching soles to shoe bottoms an improved pad box structure adapted to operate successively on shoes ranging in sizes from small shoes, such as childrens and misses shoes, to large shoes, such as mens shoes.

In accordance with the foregoing a feature of the invention comprises improved means associated with a sole and shoe receiving pad for relatively positioning a sole and shoe thereon, said means including gage arms or fingers having work engaging portions pivoted thereto and arranged to be swung relatively to the arms to adapt said work engaging portions for operating successively upon shoes of different sizes.

As herein illustrated, the gage arms are arranged for pivotal movement toward and away from a sole on the pad and they are adapted to be moved yieldingly toward the sole to find the opposite edge faces thereof wherever the sole is placed on the pad by an operator. The work engaging portions comprise in effect extensions of the arms and they are pivoted for movement lengthwise of the pad relatively to the arms to bring sole and shoe gages carried by said extension members into proper positions for operating on shoes of difierent lengths, for example, on misses and childrens shoes and also on mens shoes. Preferably, and as herein illustrated, the arrangement is such that the gages contact with the sole and shoe at points located between the ball line and the tip line when the gage arms are swung into operative position.

In accordance with another feature of the invention means is provided for maintaining the work engaging portions or extensions of the gage arms in any position into which they may be swung lengthwise of the pad. As illustrated, sufficient friction is provided between the extension members and the ends of the gage arms to cause the extension members to resist displacement after they have been swung into a desired position, thereby permitting the gages to operate on a shoe of any size falling within the total range of swinging movement of the extension members, this movement being deter-- mined or limited by stops provided on the gage arms adjacent to the extension members.

In accordance with a further feature of the invention heel gage mechanism is provided capable of adjustment longitudinally of the pad to permit sole and shoe gages associated therewith to be moved into a. proper position to operate on a shoe of any size that can be operated upon by the forepart gages.

With the above and other objects and features in view the invention will now be described in connection with the accompanying drawings and will thereafter be pointed out in the claims.

In the drawings,

Fig. 1 is a front elevation of the pad box embodying the present invention with a mans shoe mounted thereon;

Fig. 2 is an enlarged perspective View of the work engaging portion of one set of sole and shoe positioning gages;

Fig. 3 is a plan view of the pad box;

Fig. 4 is an inverted plan View, on an enlarged scale, of an end portion of one of the gage arms; and

Fig. 5 is a vertical section taken on the line V--V of Fig. 4.

The pad box of the present invention is. illustrated herein, as embodied in a cement sole attaching machine of the type disclosed in Letters Patent of the United States No. 2,047,185, granted July 14, 1936 on an application filed in the name of Milton H. Ballard et al., the pad box being modified to adapt it for operating on large shoes, such as mens shoes, as disclosed in Letters Patent oi the United States No. 2,063,041, granted December 8, 1936, on an application filed in the name of L. G. Knowles. As shown in the Knowles patent, the pad box comprises a main casting l0 secured by screws to a forwardly projecting shelf 52 on the turret of the cement sole attaching machine and having pivoted thereto on pins M a casting l6 approximately U-shaped in plan view and arranged for angular adjustment about the pivots It by mechanism (not shown) operated by a hand wheel The pad box carries a pad 20 (Fig. 1) preferably having a facing of leather 22 against which a sole and shoe may be pressed by hydraulically operated pressure applying mechanism indicated generally in Fig. 1 by the numeral 24 and fully described in the Ballard et a1. patent referred to, this mechanism being provided with abutments 26, 23 for engaging, respectively, the forepart of a shoe on the pad and a last in the shoe. The last engaging abutment 28, as herein illustrated, is arranged to pivot about a center 30, so that it may be swung 90 from. the rearwardly extending position shown in Fig. 1 into a substantially vertical position to bring another last engaging surface thereon into a lower and more forward position for engaging the last in a relatively small shoe such, for example, as a childs or a misses shoe. file abutment 28 is maintained in either of its two last engaging positions by a. toggle spring 32.

As further disclosed in the Knowles patent, the adjustable forward casting i6 carries a plurality of sole and shoe positioning fingers or gages comprising a pair of rearwardly ext-ending arms 34 arranged in cross relation to each other and pivoted on horizontal pins 36 extending through ears formed on carrier members 38 which, in turn, are pivoted on upright pins 46 fixed in the casting l6, the members 38 being arranged to be swung about their pivots 40 in directions to move the arms 34 toward a sole and shoe on the pad by tension springs 42. The construction and arrangement of this mechanism is substantially the same as the positioning mechanism for operating on the tip line of a sole and shoe disclosed in the Ballard et al. patent except that the gage arms 34 of the present construction are of sufficient length to permit the gages carried thereby to engage the opposite sides of a sole and shoe at points located between the tip line and the ball line.

As also disclosed in the Ballard et al. patent, the gage arms 34 are held separated or in their inoperative positions against the action of the springs 42 through the operation of a substantially U-shaped rocking member or arm 44 (Fig. 1) which is actuated to withdraw the gages or to permit them to be moved by their springs yieldingly toward the sole and shoe through the operation of a link 46 and further mechanism 48 connecting the rocking arm 44 to a treadle operated bell crank lever 50, this lever also operating gage mechanism with which the pad box is provided for relatively positioning the heel portions of the sole and shoe on the pad, as will be more fully explained hereinafter.

The carrier members 38 extend inwardly toward each other from their pivots 40, as viewed in Fig. 3, and are provided with relatively thin plate-like inner portions which overlap and are provided with arcuate slots 52 struck from the centers 40 through which extends a bolt 54 which forms a part of locking mechanism for securing the gage arms in operative position by clamping the carrier members 38 against further pivotal movement after the gages have contacted with a sole and shoe. Since this locking mechanism is fully described in the Ballard et a1. patent to which reference may be had for a complete disclosure, no further description thereof will be necessary herein.

As indicated above, the forepart sole and shoe positioning mechanism of the pad box has been modified as disclosed in the Knowles patent to adapt it more particularly for operating on large shoes such as mens shoes. In order, however, to permit this forepart positioning mechanism and the mechanism for relatively locating the heel portions of soles and shoes on the pad to operate on small shoes, such as childrens or misses shoes, as well as on large shoes, the following mechanism is provided.

The gage arms 34 have been lengthened an inch or more over the tip line gages of the Ballard et al. patent and have extending inwardly from their operating ends extension members or arms 56 which are pivoted on the gage arms on upright pins 58 and are arranged for swinging movement relatively to the arms and lengthwise of the pad to enable sole and shoe positioning gages carried by the extension members to be located properly for operating on both large and small shoes. The extension members 56 are fastened to the lower ends of the pins 58 by tapered pins 60 (Fig. and the pivot pins 58 extend upwardly through the gage arms 34 and have threaded on their upper portions hand nuts 62. Relatively stron compression springs 64 are interposed between the gage arms and the hand nuts so that the extension members 56 will be urged constantly against the lower sides of the gage arms and thus be maintained by friction in any position into which they may be swung lengthwise of the pad. Between the arms 34 and the extension members 56 are fiber washers 66 for reducing the wear on the parts and increasing the coefiicient of friction, thereby assisting the springs 64 in holding the extension members firmly in any adjusted position.

Each gage arm 34 is provided with a downwardly projecting lip or ledge 68 (Figs. 2, 4 and 5) adjacent to the portion of the extension member 56 which underlies the gage arm 34. This projection 68 has two surfaces l0, 12 formed thereon (Fig. 4) for alternatively engaging the extension member 56 and limiting its swinging movement. The surfaces l0, 12 are arranged at such angles to each other as will permit the extension member 56 to be swung through an are that will move its inner end lengthwise of the pad approximately one and one-quarter inches.

At their inner ends the pivoted extensions 56 carry sole and shoe gages 14, I6 which are substantially the same as those disclosed in the Ballard et a1. patent, the sole gage 14 being rigidly secured to each extension member 56 by a screw '58. The shoe gage i6 is slidably mounted between the sole gage and the member 56 and is adjustable relatively to the sole gage by the aid of manually operated eccentric mechanism indicated generally by the numerals l9 and 86, this adjusting mechanism also acting to prevent the gage 14 from turning on the screw 18.

The operation of the sole and shoe positioning mechanism when operating successively on large and small shoes is as follows: When it is desired to position on the pad a large sole and shoe such as a mans, indicated respectively in Figs. 1 and 3, by B and A, each extension member 56 is swung about its pivot 58 until the side of the member adjacent to the projection 68 engages the surface 12 of the projection which acts as a stop for limiting the swinging movement of the extension member toward the front end of the pad. The sole and shoe positioning gages 14, 16 carried by the extension members 56 will then be positioned so that when the gage arms 34 are swung inwardly into operative position by the springs 42, the gages will contact with the large sole and shoe at points located approximately midway between the ball line and the tip line. This is the position in which the parts are shown in full lines in Fig. 3.

When it is desired to operate on a small shoe such as that indicated by the dotted line C in Fig. 3, each extension member 56 is swung in an opposite direction about its pivot 58 lengthwise of the pad until the side of the member engages the surface H1 on the projection 68 which acts as a stop for limiting the swinging movement of the extension 56 toward the heel end of the pad. In this position both sets of gages 14, 16 will be located about an inch and a quarter rearwardly of the pad relatively to their former positions when the gage arms 34 are swung inwardly into operative position and, accordingly, the gages will contact with the opposite sides of the small sole and shoe substantially midway between the ball line and the tip line.

Inasmuch as the relatively heavy compression springs fi l clamp the extension members 56 to the ends of the gage arms 36 to hold the extensions and gages by friction in any position intermediate of the two positions described above, the gages may, of course, be positioned properly for operating on any shoes ranging from the small size indicated at C to the large size indicated at A and B. The convex sole and shoe engaging surfaces of the gages M, 16 cause the gages to present smooth work engaging surfaces for engaging the sole and shoe within the range of movement of the extension members irrespective of the positions into which the gages may be swung lengthwise of the pad.

Referring now to the heel gage mechanism mentioned above, it should be explained that this mechanism, which comprises equally and oppositely movable sole gages M underlying a similar pair of equally and oppositely movable shoe gages 86 mounted on transverse slide mechanism 88, corresponds substantially to that disclosed in United States Letters Patent Nos. 2,005,754 and 2,005,755 granted June 25, 1935, on applications filed respectively in the names of R. N. Sandberg and F. J. Better. As described in the patents just referred to, the heel gage mechanism is operated to position the heel portions of a sole and shoe relatively to each other on the pad by connections operated through the treadle-operated lever 58 mentioned above and by further connections extending between the pressure applying mechanism 26 (Fig. 1) and the heel gage mechanism. In order, however, to enable the heel gages 84, 855 to operate on relatively small shoes as well as on large shoes, a substantial range of longitudinal movement is necessary for the entire heel gage assembly. As described in the Sandberg patent, the slide mechanism 88 is adjustably mounted for pivotal movement heightwise of the pad on a horizontal pin 9!] (Fig. 1) carried by a bracket 92 which, in turn, is arranged for adjustment lengthwise of the pad on a slide 94 mounted in a vertical guideway 86 formed in the right-hand end of the main casting iii of the pad box. As shown in the Better patent, the bracket 92 is secured in adjusted position by a thumb screw 98 passing through a slot w ll in the slide 94 and threaded into the bracket 92. In the present construction, the slot Hill has been elongated to permit a greater range of longitudinal movement for the slide 92 and the gage mechanism carried thereby than was possible heretofore, thereby permitting the operating ends of the sole and shoe gages 8 3, 36 to move lengthwise of the pad from the rearward position shown in full lines in Figs. 1 and 3 to the forward position indicated by the dotted lines M12.

Substantial longitudinal movement of the heel gage mechanism is further facilitated by utilizing a heel supporting plate I04 at the heel end of the pad box which does not underlie the entire heel portion of a large shoe but which extends rearwardly only to about the center of the heel portion of a large shoe. Moreover, the transverse slide mechanism 88 which carries the heel gages is narrow enough lengthwise of the pad box to permit this mechanism to be moved toward the toe end of the pad the full distance permitted by the elongated slot I00. Consequently sufiicient longitudinal adjustment of the heel gage mechanism is permitted to enable the gages to operate on. all sizes of shoes that can be operated upon by the forepart gages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for applying pressure to shoe bottoms, a pad for receiving a sole and shoe, means for relatively positioning the sole and shoe on the pad, said means comprising arms having work engaging portions thereon arranged to be swung lengthwise of the pad relatively to said arms to position said portions for operating upon shoes of different lengths, means for limiting the swinging movement of said portions in one direction, and separate means for limiting the swinging movement of said portions in the opposite direction.

2. In a machine for applying pressure to shoe bottoms, a pad having a surface for receiving a sole and shoe, yieldingly operating means for finding a sole placed on the pad and positioning a shoe relatively thereto, said means including fingers having work engaging portions arranged to be swung in arcs extending lengthwise of the pad relatively to said fingers into positions for operating upon shoes of different lengths, and means for automatically maintaining said portions in any position into which they may be swung.

3. In a machine for applying pressure to shoe bottoms, a pad for receiving a sole and shoe, gage arms pivoted in crossed relation to each other and arranged for pivotal movement toward and away from a sole on. the pad, said arms extending from the toe end of the pad rearwardly beyond the tip line of the sole, and gages carried by said arms for positioning a shoe relatively to the sole, said gages being arranged for swinging movement limited distances in both directions lengthwise of the pad relatively to said arms to position the gages for engaging shoes of difierent lengths at points located between the ball line and the tip line portions of the shoes.

4. In a machine for applying pressure to shoe bottoms, a pad for receiving a sole and shoe, members for positioning an end portion of the shoe relatively to the sole, said members having separate work engaging portions pivoted thereon for swinging movement into a plurality of operative positions lengthwise of the pad to adapt said members for operating successively on shoes of diiferent lengths, means for maintaining said work engaging portions in any position into which they may be swung, and means for limiting the swinging movement of said portions in opposite directions.

5. In a machine for applying pressure to shoe bottoms, a pad box, a pad in the box, means for relatively positioning the foreparts of a sole and shoe on the pad, said means comprising arms having separate work engaging portions thereon arranged to be swung relatively to said arms lengthwise of the pad into a plurality of positions for operating upon shoes of difierent lengths, means for automatically maintaining said work engaging portions in any position into which they may be swung, and means for relatively positioning the heel portions of the sole and shoe, said means being arranged for movement lengthwise of the pad to adapt it for operating on the heel portions of any shoes that can be operated upon by the forepart positioning means.

soles and shoes ranging from large sizes to small sizes, separate means for limiting the swinging movement of said gages in each direction lengthwise of the pad, and gages for relatively positioning the heel portions of soles and shoes on the pad, said gages being arranged for suflicient adjustment lengthwise of the pad to enable them to operate on all sizes of shoes that can be operated upon by the forepart gages.

LLOYD G. KNOWLES. 

